Answer:
W = 2.5*10⁻⁴ J (by me)
Explanation:
μy = 5.0 x 10⁻⁴ A·m²
By = 0.5 T
∅ = 0º
If
μx = 5.0*10⁻⁴ A·m²
By = 0.5 T
∅ = 90º
We get ΔU as follows
ΔU = Uf - Ui
Ui = - μy*By*Cos ∅ = - 5.0*10⁻⁴ A·m²*0.5 T*Cos 0º = - 2.5*10⁻⁴ J
Uf = - μx*By*Cos ∅ = - 5.0*10⁻⁴ A·m²*0.5 T*Cos 90º = 0 J
Finally we use the equation
W = - ΔU = - (0 - (- 2.5*10⁻⁴)) J = - 2.5*10⁻⁴ J (by the field)
W = 2.5*10⁻⁴ J (by me)
Use newton<span> in a </span>sentence<span>. An engraving of Sir Isaac </span>Newton<span>. Licensed from iStockPhoto. noun. The definition of a </span>newton<span> is a unit of force in the International System of Units, or a man's name, or the name of an English mathematician, Sir Isaac </span>Newton<span>.
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Newton's 3rd law states that every action has an equal and opposite reaction. This means that if the astronaut throws his 50kg backpack in the direction in which he is drifting with enough force, he will propel himself back towards the spaceship